src/w32term.h

   1 /* Definitions and headers for communication on the Microsoft W32 API.
   2    Copyright (C) 1995, 2001 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Added by Kevin Gallo */
  22
  23 #include "w32gui.h"
  24
  25 \f
  26 #define BLACK_PIX_DEFAULT(f) PALETTERGB(0,0,0)
  27 #define WHITE_PIX_DEFAULT(f) PALETTERGB(255,255,255)
  28
  29 #define FONT_WIDTH(f)       \
  30   ((f)->bdf ? (f)->bdf->width : (f)->tm.tmAveCharWidth)
  31 #define FONT_HEIGHT(f)      \
  32    ((f)->bdf ? (f)->bdf->height : (f)->tm.tmHeight)
  33 #define FONT_BASE(f)        \
  34   ((f)->bdf ? (f)->bdf->ury : (f)->tm.tmAscent)
  35 #define FONT_DESCENT(f)     \
  36   ((f)->bdf ? -((f)->bdf->lly) : (f)->tm.tmDescent)
  37 #define FONT_MAX_WIDTH(f)   \
  38   ((f)->bdf ? (f)->bdf->width : (f)->tm.tmMaxCharWidth)
  39
  40 #define CP_DEFAULT 1004
  41 /* Special pseudo-codepages. */
  42 #define CP_8BIT      -1
  43 #define CP_UNICODE   -2
  44 #define CP_UNKNOWN   -3
  45
  46 #define CHECK_W32_FRAME(f, frame)               \
  47   if (NILP (frame))                             \
  48     f = SELECTED_FRAME ();                      \
  49   else                                          \
  50     {                                           \
  51       CHECK_LIVE_FRAME (frame, 0);              \
  52       f = XFRAME (frame);                       \
  53     }                                           \
  54   if (! FRAME_W32_P (f))
  55
  56 /* Indicates whether we are in the readsocket call and the message we
  57    are processing in the current loop */
  58
  59 extern MSG CurMsg;
  60 extern BOOL bUseDflt;
  61
  62 extern struct frame *x_window_to_frame ();
  63
  64 /* Structure recording bitmaps and reference count.
  65    If REFCOUNT is 0 then this record is free to be reused.  */
  66
  67 struct w32_bitmap_record
  68 {
  69   Pixmap pixmap;
  70   char *file;
  71   HINSTANCE hinst; /* Used to load the file */
  72   int refcount;
  73   /* Record some info about this pixmap.  */
  74   int height, width, depth;
  75 };
  76
  77 /* Palette book-keeping stuff for mapping requested colors into the
  78    system palette.  Keep a ref-counted list of requested colors and
  79    regenerate the app palette whenever the requested list changes. */
  80
  81 extern Lisp_Object Vw32_enable_palette;
  82
  83 struct w32_palette_entry {
  84   struct w32_palette_entry * next;
  85   PALETTEENTRY entry;
  86 #if 0
  87   unsigned refcount;
  88 #endif
  89 };
  90
  91 extern void w32_regenerate_palette(struct frame *f);
  92
  93 \f
  94 /* For each display (currently only one on w32), we have a structure that
  95    records information about it.  */
  96
  97 struct w32_display_info
  98 {
  99   /* Chain of all w32_display_info structures.  */
 100   struct w32_display_info *next;
 101
 102   /* This is a cons cell of the form (NAME . FONT-LIST-CACHE).
 103      The same cons cell also appears in x_display_name_list.  */
 104   Lisp_Object name_list_element;
 105
 106   /* Number of frames that are on this display.  */
 107   int reference_count;
 108
 109   /* Dots per inch of the screen.  */
 110   double resx, resy;
 111
 112   /* Number of planes on this screen.  */
 113   int n_planes;
 114
 115   /* Number of bits per pixel on this screen.  */
 116   int n_cbits;
 117
 118   /* Dimensions of this screen.  */
 119   int height, width;
 120   int height_in,width_in;
 121
 122   /* Mask of things that cause the mouse to be grabbed.  */
 123   int grabbed;
 124
 125   /* Emacs bitmap-id of the default icon bitmap for this frame.
 126      Or -1 if none has been allocated yet.  */
 127   int icon_bitmap_id;
 128
 129   /* The root window of this screen.  */
 130   Window root_window;
 131
 132   /* The cursor to use for vertical scroll bars.  */
 133   Cursor vertical_scroll_bar_cursor;
 134
 135   /* Resource data base */
 136   XrmDatabase xrdb;
 137
 138   /* color palette information.  */
 139   int has_palette;
 140   struct w32_palette_entry * color_list;
 141   unsigned num_colors;
 142   HPALETTE palette;
 143
 144   /* deferred action flags checked when starting frame update.  */
 145   int regen_palette;
 146
 147   /* Keystroke that has been faked by Emacs and will be ignored when
 148      received; value is reset after key is received.  */
 149   int faked_key;
 150
 151   /* A table of all the fonts we have already loaded.  */
 152   struct font_info *font_table;
 153
 154   /* The current capacity of font_table.  */
 155   int font_table_size;
 156
 157   /* Minimum width over all characters in all fonts in font_table.  */
 158   int smallest_char_width;
 159
 160   /* Minimum font height over all fonts in font_table.  */
 161   int smallest_font_height;
 162
 163   /* Reusable Graphics Context for drawing a cursor in a non-default face. */
 164   XGCValues *scratch_cursor_gc;
 165
 166   /* These variables describe the range of text currently shown in its
 167      mouse-face, together with the window they apply to. As long as
 168      the mouse stays within this range, we need not redraw anything on
 169      its account.  Rows and columns are glyph matrix positions in
 170      MOUSE_FACE_WINDOW.  */
 171   int mouse_face_beg_row, mouse_face_beg_col;
 172   int mouse_face_beg_x, mouse_face_beg_y;
 173   int mouse_face_end_row, mouse_face_end_col;
 174   int mouse_face_end_x, mouse_face_end_y;
 175   int mouse_face_past_end;
 176   Lisp_Object mouse_face_window;
 177   int mouse_face_face_id;
 178   Lisp_Object mouse_face_overlay;
 179
 180   /* 1 if a mouse motion event came and we didn't handle it right away because
 181      gc was in progress.  */
 182   int mouse_face_deferred_gc;
 183
 184   /* FRAME and X, Y position of mouse when last checked for
 185      highlighting.  X and Y can be negative or out of range for the frame.  */
 186   struct frame *mouse_face_mouse_frame;
 187   int mouse_face_mouse_x, mouse_face_mouse_y;
 188
 189   /* Nonzero means defer mouse-motion highlighting.  */
 190   int mouse_face_defer;
 191
 192   /* Nonzero means that the mouse highlight should not be shown.  */
 193   int mouse_face_hidden;
 194
 195   int mouse_face_image_state;
 196
 197   char *w32_id_name;
 198
 199   /* The number of fonts actually stored in w32_font_table.
 200      font_table[n] is used and valid iff 0 <= n < n_fonts. 0 <=
 201      n_fonts <= font_table_size. and font_table[i].name != 0. */
 202   int n_fonts;
 203
 204   /* Pointer to bitmap records.  */
 205   struct w32_bitmap_record *bitmaps;
 206
 207   /* Allocated size of bitmaps field.  */
 208   int bitmaps_size;
 209
 210   /* Last used bitmap index.  */
 211   int bitmaps_last;
 212
 213   /* The frame (if any) which has the window that has keyboard focus.
 214      Zero if none.  This is examined by Ffocus_frame in w32fns.c.  Note
 215      that a mere EnterNotify event can set this; if you need to know the
 216      last frame specified in a FocusIn or FocusOut event, use
 217      w32_focus_event_frame.  */
 218   struct frame *w32_focus_frame;
 219
 220   /* The last frame mentioned in a FocusIn or FocusOut event.  This is
 221      separate from w32_focus_frame, because whether or not LeaveNotify
 222      events cause us to lose focus depends on whether or not we have
 223      received a FocusIn event for it.  */
 224   struct frame *w32_focus_event_frame;
 225
 226   /* The frame which currently has the visual highlight, and should get
 227      keyboard input (other sorts of input have the frame encoded in the
 228      event).  It points to the focus frame's selected window's
 229      frame.  It differs from w32_focus_frame when we're using a global
 230      minibuffer.  */
 231   struct frame *x_highlight_frame;
 232
 233   /* Cache of images.  */
 234   struct image_cache *image_cache;
 235 };
 236
 237 /* This is a chain of structures for all the displays currently in use.  */
 238 extern struct w32_display_info *x_display_list;
 239 extern struct w32_display_info one_w32_display_info;
 240
 241 /* This is a list of cons cells, each of the form (NAME . FONT-LIST-CACHE),
 242    one for each element of w32_display_list and in the same order.
 243    NAME is the name of the frame.
 244    FONT-LIST-CACHE records previous values returned by x-list-fonts.  */
 245 extern Lisp_Object w32_display_name_list;
 246
 247 /* Regexp matching a font name whose width is the same as `PIXEL_SIZE'.  */
 248 extern Lisp_Object Vx_pixel_size_width_font_regexp;
 249
 250 /* A flag to control how to display unibyte 8-bit character.  */
 251 extern int unibyte_display_via_language_environment;
 252
 253 struct w32_display_info *x_display_info_for_name ();
 254
 255 extern struct w32_display_info *w32_term_init ();
 256 \f
 257 extern Lisp_Object w32_list_fonts P_ ((struct frame *, Lisp_Object, int, int));
 258 extern struct font_info *w32_get_font_info (), *w32_query_font ();
 259 extern void w32_cache_char_metrics (XFontStruct *font);
 260 extern void w32_find_ccl_program();
 261 extern Lisp_Object x_get_font_repertory P_ ((struct frame *,
 262                                              struct font_info *));
 263 \f
 264 #define PIX_TYPE COLORREF
 265
 266 /* Each W32 frame object points to its own struct w32_display object
 267    in the output_data.w32 field.  The w32_display structure contains all
 268    the information that is specific to W32 windows.  */
 269
 270 /* Put some things in x_output for compatibility.
 271    NTEMACS_TODO: Move all common things here to eliminate unneccesary
 272    diffs between X and w32 code.  */
 273 struct x_output
 274 {
 275   PIX_TYPE background_pixel;
 276   PIX_TYPE foreground_pixel;
 277 };
 278
 279
 280 struct w32_output
 281 {
 282   /* Placeholder for things accessed through output_data.x.  */
 283   struct x_output x_compatible;
 284
 285   /* Menubar "widget" handle.  */
 286   HMENU menubar_widget;
 287
 288   /* Original palette (used to deselect real palette after drawing) */
 289   HPALETTE old_palette;
 290
 291   /* Here are the Graphics Contexts for the default font.  */
 292   XGCValues *cursor_gc;                         /* cursor drawing */
 293
 294   /* The window used for this frame.
 295      May be zero while the frame object is being created
 296      and the window has not yet been created.  */
 297   Window window_desc;
 298
 299   /* The window that is the parent of this window.
 300      Usually this is a window that was made by the window manager,
 301      but it can be the root window, and it can be explicitly specified
 302      (see the explicit_parent field, below).  */
 303   Window parent_desc;
 304
 305   /* Default ASCII font of this frame. */
 306   XFontStruct *font;
 307
 308   /* The baseline offset of the default ASCII font.  */
 309   int baseline_offset;
 310
 311   /* If a fontset is specified for this frame instead of font, this
 312      value contains an ID of the fontset, else -1.  */
 313   int fontset;
 314
 315   /* Pixel values used for various purposes.
 316      border_pixel may be -1 meaning use a gray tile.  */
 317   COLORREF cursor_pixel;
 318   COLORREF border_pixel;
 319   COLORREF mouse_pixel;
 320   COLORREF cursor_foreground_pixel;
 321
 322   /* Foreground color for scroll bars.  A value of -1 means use the
 323      default (black for non-toolkit scroll bars).  */
 324   COLORREF scroll_bar_foreground_pixel;
 325
 326   /* Background color for scroll bars.  A value of -1 means use the
 327      default (background color of the frame for non-toolkit scroll
 328      bars).  */
 329   COLORREF scroll_bar_background_pixel;
 330
 331   /* Descriptor for the cursor in use for this window.  */
 332   Cursor text_cursor;
 333   Cursor nontext_cursor;
 334   Cursor modeline_cursor;
 335   Cursor hand_cursor;
 336   Cursor hourglass_cursor;
 337   Cursor horizontal_drag_cursor;
 338
 339   /* Window whose cursor is hourglass_cursor.  This window is
 340      temporarily mapped to display an hourglass cursor.  */
 341   Window hourglass_window;
 342
 343   /* Non-zero means hourglass cursor is currently displayed.  */
 344   unsigned hourglass_p : 1;
 345
 346   /* Flag to set when the window needs to be completely repainted.  */
 347   int needs_exposure;
 348
 349   DWORD dwStyle;
 350
 351   /* This is the Emacs structure for the display this frame is on.  */
 352   /* struct w32_display_info *display_info; */
 353
 354   /* Nonzero means our parent is another application's window
 355      and was explicitly specified.  */
 356   char explicit_parent;
 357
 358   /* Nonzero means tried already to make this frame visible.  */
 359   char asked_for_visible;
 360
 361   /* Nonzero means menubar is currently active.  */
 362   char menubar_active;
 363
 364   /* Nonzero means a menu command is being processed.  */
 365   char menu_command_in_progress;
 366
 367   /* Nonzero means menubar is about to become active, but should be
 368      brought up to date first.  */
 369   volatile char pending_menu_activation;
 370
 371   /* Relief GCs, colors etc.  */
 372   struct relief
 373   {
 374     XGCValues *gc;
 375     unsigned long pixel;
 376     int allocated_p;
 377   }
 378   black_relief, white_relief;
 379
 380   /* The background for which the above relief GCs were set up.
 381      They are changed only when a different background is involved.  */
 382   unsigned long relief_background;
 383 };
 384
 385 extern struct w32_output w32term_display;
 386
 387 /* Return the X output data for frame F.  */
 388 #define FRAME_X_OUTPUT(f) ((f)->output_data.w32)
 389
 390 /* Return the window associated with the frame F.  */
 391 #define FRAME_W32_WINDOW(f) ((f)->output_data.w32->window_desc)
 392 #define FRAME_X_WINDOW(f) ((f)->output_data.w32->window_desc)
 393
 394 #define FRAME_FOREGROUND_PIXEL(f) ((f)->output_data.x->foreground_pixel)
 395 #define FRAME_BACKGROUND_PIXEL(f) ((f)->output_data.x->background_pixel)
 396 #define FRAME_FONT(f) ((f)->output_data.w32->font)
 397 #define FRAME_FONTSET(f) ((f)->output_data.w32->fontset)
 398 #define FRAME_BASELINE_OFFSET(f) ((f)->output_data.w32->baseline_offset)
 399
 400 /* This gives the w32_display_info structure for the display F is on.  */
 401 #define FRAME_W32_DISPLAY_INFO(f) (&one_w32_display_info)
 402 #define FRAME_X_DISPLAY_INFO(f) (&one_w32_display_info)
 403
 404 /* This is the `Display *' which frame F is on.  */
 405 #define FRAME_X_DISPLAY(f) (0)
 406
 407 /* This is the 'font_info *' which frame F has.  */
 408 #define FRAME_W32_FONT_TABLE(f) (FRAME_W32_DISPLAY_INFO (f)->font_table)
 409
 410 /* Value is the smallest width of any character in any font on frame F.  */
 411
 412 #define FRAME_SMALLEST_CHAR_WIDTH(F) \
 413      FRAME_W32_DISPLAY_INFO(F)->smallest_char_width
 414
 415 /* Value is the smallest height of any font on frame F.  */
 416
 417 #define FRAME_SMALLEST_FONT_HEIGHT(F) \
 418      FRAME_W32_DISPLAY_INFO(F)->smallest_font_height
 419
 420 /* Return a pointer to the image cache of frame F.  */
 421
 422 #define FRAME_X_IMAGE_CACHE(F) FRAME_W32_DISPLAY_INFO ((F))->image_cache
 423
 424 \f
 425 /* W32-specific scroll bar stuff.  */
 426
 427 /* We represent scroll bars as lisp vectors.  This allows us to place
 428    references to them in windows without worrying about whether we'll
 429    end up with windows referring to dead scroll bars; the garbage
 430    collector will free it when its time comes.
 431
 432    We use struct scroll_bar as a template for accessing fields of the
 433    vector.  */
 434
 435 struct scroll_bar {
 436
 437   /* These fields are shared by all vectors.  */
 438   EMACS_INT size_from_Lisp_Vector_struct;
 439   struct Lisp_Vector *next_from_Lisp_Vector_struct;
 440
 441   /* The window we're a scroll bar for.  */
 442   Lisp_Object window;
 443
 444   /* The next and previous in the chain of scroll bars in this frame.  */
 445   Lisp_Object next, prev;
 446
 447   /* The window representing this scroll bar.  Since this is a full
 448      32-bit quantity, we store it split into two 32-bit values.  */
 449   Lisp_Object w32_window_low, w32_window_high;
 450
 451   /* Same as above for the widget.  */
 452   Lisp_Object w32_widget_low, w32_widget_high;
 453
 454   /* The position and size of the scroll bar in pixels, relative to the
 455      frame.  */
 456   Lisp_Object top, left, width, height;
 457
 458   /* The starting and ending positions of the handle, relative to the
 459      handle area (i.e. zero is the top position, not
 460      SCROLL_BAR_TOP_BORDER).  If they're equal, that means the handle
 461      hasn't been drawn yet.
 462
 463      These are not actually the locations where the beginning and end
 464      are drawn; in order to keep handles from becoming invisible when
 465      editing large files, we establish a minimum height by always
 466      drawing handle bottoms VERTICAL_SCROLL_BAR_MIN_HANDLE pixels below
 467      where they would be normally; the bottom and top are in a
 468      different co-ordinate system.  */
 469   Lisp_Object start, end;
 470
 471   /* If the scroll bar handle is currently being dragged by the user,
 472      this is the number of pixels from the top of the handle to the
 473      place where the user grabbed it.  If the handle isn't currently
 474      being dragged, this is Qnil.  */
 475   Lisp_Object dragging;
 476 };
 477
 478 /* The number of elements a vector holding a struct scroll_bar needs.  */
 479 #define SCROLL_BAR_VEC_SIZE                                     \
 480   ((sizeof (struct scroll_bar)                                  \
 481     - sizeof (EMACS_INT) - sizeof (struct Lisp_Vector *))       \
 482    / sizeof (Lisp_Object))
 483
 484 /* Turning a lisp vector value into a pointer to a struct scroll_bar.  */
 485 #define XSCROLL_BAR(vec) ((struct scroll_bar *) XVECTOR (vec))
 486
 487
 488 /* Building a 32-bit C integer from two 16-bit lisp integers.  */
 489 #define SCROLL_BAR_PACK(low, high) (XINT (high) << 16 | XINT (low))
 490
 491 /* Setting two lisp integers to the low and high words of a 32-bit C int.  */
 492 #define SCROLL_BAR_UNPACK(low, high, int32) \
 493   (XSETINT ((low),   (int32)        & 0xffff), \
 494    XSETINT ((high), ((int32) >> 16) & 0xffff))
 495
 496
 497 /* Extract the window id of the scroll bar from a struct scroll_bar.  */
 498 #define SCROLL_BAR_W32_WINDOW(ptr) \
 499   ((Window) SCROLL_BAR_PACK ((ptr)->w32_window_low, (ptr)->w32_window_high))
 500
 501 /* Store a window id in a struct scroll_bar.  */
 502 #define SET_SCROLL_BAR_W32_WINDOW(ptr, id) \
 503   (SCROLL_BAR_UNPACK ((ptr)->w32_window_low, (ptr)->w32_window_high, (int) id))
 504
 505 /* Extract the X widget of the scroll bar from a struct scroll_bar.  */
 506 #define SCROLL_BAR_X_WIDGET(ptr) \
 507   ((Widget) SCROLL_BAR_PACK ((ptr)->x_widget_low, (ptr)->x_widget_high))
 508
 509 /* Store a widget id in a struct scroll_bar.  */
 510 #define SET_SCROLL_BAR_X_WIDGET(ptr, w) \
 511   (SCROLL_BAR_UNPACK ((ptr)->x_widget_low, (ptr)->x_widget_high, (int) w))
 512
 513 /* Return the inside width of a vertical scroll bar, given the outside
 514    width.  */
 515 #define VERTICAL_SCROLL_BAR_INSIDE_WIDTH(f,width) \
 516   ((width) \
 517    - VERTICAL_SCROLL_BAR_LEFT_BORDER \
 518    - VERTICAL_SCROLL_BAR_RIGHT_BORDER \
 519    - VERTICAL_SCROLL_BAR_WIDTH_TRIM * 2)
 520
 521 /* Return the length of the rectangle within which the top of the
 522    handle must stay.  This isn't equivalent to the inside height,
 523    because the scroll bar handle has a minimum height.
 524
 525    This is the real range of motion for the scroll bar, so when we're
 526    scaling buffer positions to scroll bar positions, we use this, not
 527    VERTICAL_SCROLL_BAR_INSIDE_HEIGHT.  */
 528 #define VERTICAL_SCROLL_BAR_TOP_RANGE(f,height) \
 529   (VERTICAL_SCROLL_BAR_INSIDE_HEIGHT (f, height) - VERTICAL_SCROLL_BAR_MIN_HANDLE)
 530
 531 /* Return the inside height of vertical scroll bar, given the outside
 532    height.  See VERTICAL_SCROLL_BAR_TOP_RANGE too.  */
 533 #define VERTICAL_SCROLL_BAR_INSIDE_HEIGHT(f,height) \
 534   ((height) - VERTICAL_SCROLL_BAR_TOP_BORDER - VERTICAL_SCROLL_BAR_BOTTOM_BORDER)
 535
 536
 537 /* Border widths for scroll bars.
 538
 539    Scroll bar windows don't have any borders; their border width is
 540    set to zero, and we redraw borders ourselves.  This makes the code
 541    a bit cleaner, since we don't have to convert between outside width
 542    (used when relating to the rest of the screen) and inside width
 543    (used when sizing and drawing the scroll bar window itself).
 544
 545    The handle moves up and down/back and forth in a rectangle inset
 546    from the edges of the scroll bar.  These are widths by which we
 547    inset the handle boundaries from the scroll bar edges.  */
 548 #define VERTICAL_SCROLL_BAR_LEFT_BORDER (0)
 549 #define VERTICAL_SCROLL_BAR_RIGHT_BORDER (0)
 550 #define VERTICAL_SCROLL_BAR_TOP_BORDER (vertical_scroll_bar_top_border)
 551 #define VERTICAL_SCROLL_BAR_BOTTOM_BORDER (vertical_scroll_bar_bottom_border)
 552
 553 /* Minimum lengths for scroll bar handles, in pixels.  */
 554 #define VERTICAL_SCROLL_BAR_MIN_HANDLE (vertical_scroll_bar_min_handle)
 555
 556 /* Trimming off a few pixels from each side prevents
 557    text from glomming up against the scroll bar */
 558 #define VERTICAL_SCROLL_BAR_WIDTH_TRIM (0)
 559
 560 \f
 561 extern void w32_fill_rect ();
 562 extern void w32_clear_window ();
 563
 564 #define w32_fill_area(f,hdc,pix,x,y,nx,ny) \
 565 { \
 566     RECT rect; \
 567     rect.left = x; \
 568     rect.top = y; \
 569     rect.right = x + nx; \
 570     rect.bottom = y + ny; \
 571     w32_fill_rect (f,hdc,pix,&rect); \
 572 }
 573
 574 #define w32_clear_rect(f,hdc,lprect) \
 575 w32_fill_rect (f,hdc,f->output_data.x->background_pixel,lprect)
 576
 577 #define w32_clear_area(f,hdc,px,py,nx,ny) \
 578 w32_fill_area (f,hdc,f->output_data.x->background_pixel,px,py,nx,ny)
 579
 580 extern struct font_info *w32_load_font ();
 581 extern void w32_unload_font ();
 582
 583 /* Define for earlier versions of Visual C */
 584 #ifndef WM_MOUSEWHEEL
 585 #define WM_MOUSEWHEEL                  (WM_MOUSELAST + 1)
 586 #endif /* WM_MOUSEWHEEL */
 587 #ifndef MSH_MOUSEWHEEL
 588 #define MSH_MOUSEWHEEL                 "MSWHEEL_ROLLMSG"
 589 #endif /* MSH_MOUSEWHEEL */
 590 #ifndef WM_XBUTTONDOWN
 591 #define WM_XBUTTONDOWN                 (WM_MOUSEWHEEL + 1)
 592 #define WM_XBUTTONUP                   (WM_MOUSEWHEEL + 2)
 593 #endif /* WM_XBUTTONDOWN */
 594
 595 #define WM_EMACS_START                 (WM_USER + 1)
 596 #define WM_EMACS_KILL                  (WM_EMACS_START + 0)
 597 #define WM_EMACS_CREATEWINDOW          (WM_EMACS_START + 1)
 598 #define WM_EMACS_DONE                  (WM_EMACS_START + 2)
 599 #define WM_EMACS_CREATESCROLLBAR       (WM_EMACS_START + 3)
 600 #define WM_EMACS_SHOWWINDOW            (WM_EMACS_START + 4)
 601 #define WM_EMACS_SETWINDOWPOS          (WM_EMACS_START + 5)
 602 #define WM_EMACS_DESTROYWINDOW         (WM_EMACS_START + 6)
 603 #define WM_EMACS_TRACKPOPUPMENU        (WM_EMACS_START + 7)
 604 #define WM_EMACS_SETFOCUS              (WM_EMACS_START + 8)
 605 #define WM_EMACS_SETFOREGROUND         (WM_EMACS_START + 9)
 606 #define WM_EMACS_SETLOCALE             (WM_EMACS_START + 10)
 607 #define WM_EMACS_SETKEYBOARDLAYOUT     (WM_EMACS_START + 11)
 608 #define WM_EMACS_REGISTER_HOT_KEY      (WM_EMACS_START + 12)
 609 #define WM_EMACS_UNREGISTER_HOT_KEY    (WM_EMACS_START + 13)
 610 #define WM_EMACS_TOGGLE_LOCK_KEY       (WM_EMACS_START + 14)
 611 #define WM_EMACS_TRACK_CARET           (WM_EMACS_START + 15)
 612 #define WM_EMACS_DESTROY_CARET         (WM_EMACS_START + 16)
 613 #define WM_EMACS_SHOW_CARET            (WM_EMACS_START + 17)
 614 #define WM_EMACS_HIDE_CARET            (WM_EMACS_START + 18)
 615 #define WM_EMACS_SETCURSOR             (WM_EMACS_START + 19)
 616 #define WM_EMACS_END                   (WM_EMACS_START + 20)
 617
 618 #define WND_FONTWIDTH_INDEX    (0)
 619 #define WND_LINEHEIGHT_INDEX   (4)
 620 #define WND_BORDER_INDEX       (8)
 621 #define WND_SCROLLBAR_INDEX    (12)
 622 #define WND_BACKGROUND_INDEX   (16)
 623 #define WND_LAST_INDEX         (20)
 624
 625 #define WND_EXTRA_BYTES     (WND_LAST_INDEX)
 626
 627 extern DWORD dwWindowsThreadId;
 628 extern HANDLE hWindowsThread;
 629 extern DWORD dwMainThreadId;
 630 extern HANDLE hMainThread;
 631
 632 typedef struct W32Msg {
 633     MSG msg;
 634     DWORD dwModifiers;
 635     RECT rect;
 636 } W32Msg;
 637
 638 /* Structure for recording message when input thread must return a
 639    result that depends on lisp thread to compute.  Lisp thread can
 640    complete deferred messages out of order.  */
 641 typedef struct deferred_msg
 642 {
 643   struct deferred_msg * next;
 644   W32Msg                w32msg;
 645   LRESULT               result;
 646   int                   completed;
 647 } deferred_msg;
 648
 649 extern CRITICAL_SECTION critsect;
 650
 651 extern void init_crit ();
 652 extern void delete_crit ();
 653
 654 extern void signal_quit ();
 655
 656 #define enter_crit() EnterCriticalSection (&critsect)
 657 #define leave_crit() LeaveCriticalSection (&critsect)
 658
 659 extern void select_palette (struct frame * f, HDC hdc);
 660 extern void deselect_palette (struct frame * f, HDC hdc);
 661 extern HDC get_frame_dc (struct frame * f);
 662 extern int release_frame_dc (struct frame * f, HDC hDC);
 663
 664 extern void drain_message_queue ();
 665
 666 extern BOOL get_next_msg ();
 667 extern BOOL post_msg ();
 668 extern void complete_deferred_msg (HWND hwnd, UINT msg, LRESULT result);
 669 extern void wait_for_sync ();
 670
 671 extern BOOL parse_button ();
 672
 673 /* Keypad command key support.  W32 doesn't have virtual keys defined
 674    for the function keys on the keypad (they are mapped to the standard
 675    fuction keys), so we define our own.  */
 676 #define VK_NUMPAD_BEGIN         0x92
 677 #define VK_NUMPAD_CLEAR         (VK_NUMPAD_BEGIN + 0)
 678 #define VK_NUMPAD_ENTER         (VK_NUMPAD_BEGIN + 1)
 679 #define VK_NUMPAD_PRIOR         (VK_NUMPAD_BEGIN + 2)
 680 #define VK_NUMPAD_NEXT          (VK_NUMPAD_BEGIN + 3)
 681 #define VK_NUMPAD_END           (VK_NUMPAD_BEGIN + 4)
 682 #define VK_NUMPAD_HOME          (VK_NUMPAD_BEGIN + 5)
 683 #define VK_NUMPAD_LEFT          (VK_NUMPAD_BEGIN + 6)
 684 #define VK_NUMPAD_UP            (VK_NUMPAD_BEGIN + 7)
 685 #define VK_NUMPAD_RIGHT         (VK_NUMPAD_BEGIN + 8)
 686 #define VK_NUMPAD_DOWN          (VK_NUMPAD_BEGIN + 9)
 687 #define VK_NUMPAD_INSERT        (VK_NUMPAD_BEGIN + 10)
 688 #define VK_NUMPAD_DELETE        (VK_NUMPAD_BEGIN + 11)
 689
 690 #ifndef VK_LWIN
 691 /* Older compiler environments don't have these defined.  */
 692 #define VK_LWIN                 0x5B
 693 #define VK_RWIN                 0x5C
 694 #define VK_APPS                 0x5D
 695 #endif
 696
 697 /* Support for treating Windows and Apps keys as modifiers.  These
 698    constants must not overlap with any of the dwControlKeyState flags in
 699    KEY_EVENT_RECORD.  */
 700 #define LEFT_WIN_PRESSED       0x8000
 701 #define RIGHT_WIN_PRESSED      0x4000
 702 #define APPS_PRESSED           0x2000
 703
 704 /* When compiling on Windows 9x/ME and NT 3.x, the following are not defined
 705    (even though they are supported on 98 and ME.  */
 706 #ifndef WM_MOUSELEAVE
 707 #define WM_MOUSELEAVE 0x02A3
 708 #define TME_LEAVE 0x00000002;
 709
 710 typedef struct tagTRACKMOUSEEVENT
 711 {
 712   DWORD cbSize;
 713   DWORD dwFlags;
 714   HWND hwndTrack;
 715   DWORD dwHoverTime;
 716 } TRACKMOUSEEVENT;
 717 #endif
 718
 719 struct image;
 720 struct face;
 721
 722 XGCValues *XCreateGC (void *, Window, unsigned long, XGCValues *);
 723 struct frame * check_x_frame (Lisp_Object);
 724 EXFUN (Fx_display_color_p, 1);
 725 EXFUN (Fx_display_grayscale_p, 1);
 726 int image_ascent P_ ((struct image *, struct face *));
 727
 728 #define FONT_TYPE_FOR_UNIBYTE(font, ch)                 \
 729   ((font)->bdf ? BDF_1D_FONT : ANSI_FONT)
 730
 731 #define FONT_TYPE_FOR_MULTIBYTE(font, ch)               \
 732   (!(font)->bdf                                         \
 733    ? UNICODE_FONT                                       \
 734    : ((CHARSET_DIMENSION (CHAR_CHARSET ((ch))) == 1)    \
 735       ? BDF_1D_FONT : BDF_2D_FONT))
 736
 737 typedef DWORD (WINAPI * ClipboardSequence_Proc) ();